Summary:
Depends on D18912. Ref T13046. Add a UI to browse the existing pull log table.
The actual log still has some significant flaws, but get the basics working.
Test Plan: {F5391909}
Reviewers: amckinley
Reviewed By: amckinley
Maniphest Tasks: T13046
Differential Revision: https://secure.phabricator.com/D18914
